EXHIBIT 12

Weyerhaeuser Company and Subsidiaries

Computation of Ratios of Earnings to Fixed Charges

For the thirty-nine week periods ended September 24, 2006 and September 25, 2005

(Dollar amounts in thousands)

	Thirty-nine weeks ended
	September 24, 2006			September 25, 2005
Available earnings:
Earnings from continuing operations before interest expense, amortization of debt expense and income taxes	$	607,868		$	1,885,980
Add: interest portion of rental expense		47,078			44,294
Deduct: undistributed earnings of equity affiliates		(44,268	)		(20,055	)
Available earnings	$	610,678		$	1,910,219
Fixed charges:
Interest expense incurred:
Weyerhaeuser Company and subsidiaries, excluding Weyerhaeuser Real Estate Company and other related subsidiaries		445,168			555,383
Weyerhaeuser Real Estate Company and other related subsidiaries		50,162			40,018
Subtotal		495,330			595,401
Less: intercompany interest		(8,756	)		1,861
Total interest expense incurred		486,574			597,262
Amortization of debt expense		7,592			12,472
Interest portion of rental expense		47,078			44,294
Total fixed charges	$	541,244		$	654,028
Ratio of earnings to fixed charges		1.13			2.92

Weyerhaeuser Company with its Weyerhaeuser Real Estate Company and Other Related Subsidiaries

Accounted for on the Equity Method, but Excluding the Undistributed Earnings of Those Subsidiaries

Computation of Ratios of Earnings (Loss) to Fixed Charges

For the thirty-nine week periods ended September 24, 2006 and September 25, 2005

(Dollar amounts in thousands)

	Thirty-nine weeks ended
	September 24, 2006			September 25, 2005
Available earnings (loss):
Earnings from continuing operations before interest expense, amortization of debt expense and income taxes	$	574,193		$	1,840,122
Add: interest portion of rental expense		41,446			39,765
Deduct: undistributed earnings of equity affiliates		(6,211	)		3,172
Deduct: undistributed earnings before income taxes of Weyerhaeuser Real Estate Company and other related subsidiaries		(430,438	)		(484,210	)
Available earnings (loss)	$	178,990		$	1,398,849
Fixed charges:
Interest expense incurred		445,168			555,383
Amortization of debt expense		7,592			12,472
Interest portion of rental expense		41,446			39,765
Total fixed charges	$	494,206		$	607,620
Ratio of earnings to fixed charges		—			2.30
Coverage deficiency(1)	$	(315,216	)	$	—

⁽¹⁾ The coverage deficiency of Weyerhaeuser Company with its Weyerhaeuser Real Estate company and other related subsidiaries accounted for on the equity method, but excluding the undistributed earnings of those subsidiaries for the thirty-nine weeks ended September 24, 2006, includes a noncash charge of $749 million arising from the impairment of goodwill associated with the Cellulose Fiber and White Papers segment.